| Zip Code | City | Population ↓ |
|---|---|---|
| 46835 | Fort Wayne | 36,557 |
| 46825 | Fort Wayne | 29,183 |
| 46804 | Fort Wayne | 29,045 |
| 46845 | Fort Wayne | 28,011 |
| 46815 | Fort Wayne | 26,896 |
| 46806 | Fort Wayne | 24,684 |
| 46805 | Fort Wayne | 22,218 |
| 46818 | Fort Wayne | 21,752 |
| 46808 | Fort Wayne | 20,049 |
| 46816 | Fort Wayne | 19,501 |
| 46774 | New Haven | 17,260 |
| 46814 | Fort Wayne | 16,328 |
| 46807 | Fort Wayne | 16,034 |
| 46803 | Fort Wayne | 10,629 |
| 46802 | Fort Wayne | 10,588 |
| 46819 | Fort Wayne | 9,445 |
| 46809 | Fort Wayne | 8,747 |
| 46748 | Huntertown | 6,890 |
| 46765 | Leo | 5,935 |
| 46797 | Woodburn | 4,214 |
| 46741 | Grabill | 4,109 |
| 46773 | Monroeville | 3,180 |
| 46743 | Harlan | 2,747 |
| 46745 | Hoagland | 1,849 |
| 46798 | Yoder | 1,051 |
| 46704 | Arcola | 40 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 26 ZCTAs in Allen County, Indiana (US Census).